Valve construction



Feb. 11, 1930. c. F. BURGMANN VALVE CONSTRUCTION Filed Aug. 29, 1927 INVENTOR 6. F BUR-GMA/V/V BY 7'52 2 ATTORNEY Patented Feb. 11, 1930 CARL FREDERICK BURGMANN, OF CHICAGO, ILLINOIS VALVE CONSTRUCTION Application filed August 29, 1927.

My invention relates to improvements in valve constructions, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a valve construction by means of which the valve may operate efficiently without interference due to the formation of carbon thereon.

A further object of my invention is to provide a device of the type described in which the contacting portions thereof may be continuously lubricated, as these portions are positioned out of the path of the exhaust gases.

A further object of my invention is to provide a device of the type described which has novel means for receiving the general formation of carbon and directing the same so that it will not interfere with the operation of the valve.

A further object of my invention is to provide a device of the type described by means of which it is prevented from burning or warping.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings, forming part of this application, in which' Figure 1 is a side elevation of the valve as disposed in a motor, and

Figure 2 is an enlarged detailed view of a portion of the device.

.In carrying out my invention, I make use of a motor 1 having a motor block 2 and a head 3. The block 2 is provided with a bore 4 for receiving a valve guide 5.

I provide a valve 6 which is arranged to seat upon the valve seat 7 of the block 2. The valve 6 may be used for both the intake and exhaust, but as the exhaust valve receives more carbon than the intake valve, I have shown this valve in the exhaust valve position.

The valve 6 is provided with a valve stem 8. Concentric with the valve stem and rigidly secured thereto is a sleeve or hearing 9 which Serial No. 216,255.

is slidably disposed in the guide 5. The upper end of the sleeve 9 is provided with an annular groove 10 for a purpose hereinafter described.

The valve is provided with the usual compression spring 11 which is held by the adjusting nuts 12.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The valve is shown in solid lines in its opened position and in dotted lines in its closed position. It may therefore be observed that the upper end of the sleeve 9 may move up to but not beyond the upper end of the valve guide 5. Therefore, the exhaust gases may only contact with the valve stem above the upper edge of the sleeve 9. It is true that the formation of carbon upon the valve stem will be slow. However, with the ordinary type of valve a very slight formation of carbon thereupon is sufiicient to cause the valve stem to stick within the valve guide and not function properly. However, with the structure shown in Figure 1 and enlarged in Figure 2, the formation of carbon will have to extend beyond the outer periphery of the sleeve 9 before it can interfere with the operation of the valve.

The groove 10 aids in preventing the carbon from interfering with the operation of the valve in that the carbon may pass into the groove and not spread over the top of the sleeve 9 if the groove were not there. It is obvious that the sleeve 9 may be integral with the valve stem 8, if so desired, without departingfrom the spirit and scope of the invention.

I claim:

1. The combination with a motor having a valve seat and an opening for receiving a valve guide, of a valve guide disposed in said opening, a valve arranged to be moved into and out of registration with said valve seat, a valve stem disposed in said valve guide, and means carried by said valve stem, whereby said valve may be moved into and out of registration with said valve seat, irrespective of the formation of carbon on said valve stem.

2. A device of the type described comprising a valve, a valve stem a valve guide for receiving said valve stem, and means carried by said valve stem for guiding said valve during the movement thereof and for spacing said valve stem away from said valve guide.

3. A device of the type described comprising a valve, a valve stem and a sleeve rigidly disposed upon said valve stem and provided with an annular groove in one end thereof. CARL FREDERICK BURGMANN. 

